EP0850600A1 - Alésoir dentaire à efficacité de coupe améloirée - Google Patents
Alésoir dentaire à efficacité de coupe améloirée Download PDFInfo
- Publication number
- EP0850600A1 EP0850600A1 EP97470026A EP97470026A EP0850600A1 EP 0850600 A1 EP0850600 A1 EP 0850600A1 EP 97470026 A EP97470026 A EP 97470026A EP 97470026 A EP97470026 A EP 97470026A EP 0850600 A1 EP0850600 A1 EP 0850600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- angle
- tangent
- point
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/42—Files for root canals; Handgrips or guiding means therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/48—Means for preventing loss of endodontic instruments during treatment
Definitions
- the subject of the present invention is a dental reamer thinner up to its tip, of the type comprising helical grooves having on their edges of the cutting lips for the bore of the dental canals, in which the characteristics of the cutting conditions are defined by on the one hand an angle of section ⁇ determined by the tangent to the cutting edge at the cutting point and the perpendicular to the surface to be cut at this point and on the other hand a draft angle ⁇ determined by the plane of the cutting surface and the tangent to the non-active face of the cutting edge.
- angles ⁇ and ⁇ will be defined more precisely later.
- the object of the invention is to optimize a reamer structure in which the cutting and draft angles allow good efficiency to be obtained cut avoiding the screwing effect.
- this result is obtained with a reamer of the type above, characterized in that the value of the cutting angle ⁇ is greater or equal to zero and that of the draft angle ⁇ is greater than zero.
- the cutting edge will be slightly attenuated, so as to obtain a slightly rounded edge without jeopardizing the benefit of the cutting angle.
- the tip (1) of a cutting instrument has been represented diagrammatically (2).
- the material to be cut is represented schematically by section (3) with a redent (4).
- the clearance angle ⁇ is defined by the plane PC and the tangent T 'to the face cutting edge not active.
- the instrument is guided, without screwing, but with a low efficiency.
- listels (5) generates a large contact surface, therefore significant friction. This results in very significant resistant couples on the instruments therefore high risks of tension then rupture of the instruments in intervention course with all the disadvantages that it can present during a mouth work to extract the part of the broken instrument that remains in the canal.
- a high cutting efficiency is thus obtained, without friction or screwing as for the representation of FIG. 1A, approximately. This is reinforced providing that the working angle of the cutting edge is reduced or slightly rounded and not vivid.
- the tips of the reamers (which are generally conical in shape) will be bevelled so that the plane of the bevel makes an angle ⁇ with the axis of the instrument opposite direction to the helix angle ⁇ of the cutting edges as shown in Figure 4, with a concave face or a flat face, to facilitate the work of practitioners in particular avoiding the formation of false channels.
- This geometry of tip increases the cutting capacity of the tip, which is particularly appreciable for resumption of canal treatment, the tip becoming very active when in contact with the filling materials which had been previously put in place.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Drilling Tools (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
Description
- les figures 1A et 1B illustrent de manière schématique la définition des angles de coupe et de dépouille,
- la figure 2 illustre schématiquement en coupe un alésoir de l'art antérieur,
- la figure 3 illustre schématiquement en coupe un alésoir conforme à l'invention,
- la figure 4 est une variante de mise en oeuvre de l'alésoir de la figure 3 au niveau de la pointe de celui-ci, avec différentes sections possibles en coupe A-A représentées aux figures 4A, 4B, 4C, 4D.
- la perpendiculaire P au plan de coupe PC,
- la tangente T à l'arête de coupe au point de coupe.
- α > 0
- β > 0
- α < 0
- β = 0
- α < 0
- β = 0 (ou approximativement)
- α ≥ 0
- β > 0
Claims (3)
- Alésoir dentaire (2) s'amincissant jusqu'à sa pointe (1), du type comportant des cannelures hélicoïdales présentant sur leurs chants des lèvres coupantes pour l'alésage des canaux dentaires, dans lequel les caractéristiques des conditions de coupe sont définies par d'une part un angle de coupe α déterminé par la tangente à l'arête de coupe au point de coupe et la perpendiculaire à la surface à couper en ce point et d'autre part un angle de dépouille β déterminé par le plan de la surface de coupe et la tangente à la face non active de l'arête de coupe, caractérisé par le fait que la valeur de l'angle de coupe a est supérieur ou égale à zéro et celle de l'angle de dépouille β supérieur à zéro et en ce que l'arête de coupe est légèrement atténuée, pour obtenir une arête légèrement arrondie.
- Alésoir dentaire selon la revendication 1, caractérisé en ce que les pointes des alésoirs sont biseautées de sorte que le plan du biseau fasse un angle λ avec l'axe de l'instrument de direction opposée à l'angle δ d'hélice des arêtes coupantes avec une face concave ou une face plane.
- Alésoir dentaire selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la tangente au point de coupe de l'instrument tend à se superposer à la tangente au diamètre dans lequel est inscrite une section de coupe passant par ledit point de coupe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9614347A FR2755845B1 (fr) | 1996-11-20 | 1996-11-20 | Alesoir dentaire a efficacite de coupe amelioree |
| FR9614347 | 1996-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0850600A1 true EP0850600A1 (fr) | 1998-07-01 |
Family
ID=9497949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97470026A Withdrawn EP0850600A1 (fr) | 1996-11-20 | 1997-11-03 | Alésoir dentaire à efficacité de coupe améloirée |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5975899A (fr) |
| EP (1) | EP0850600A1 (fr) |
| JP (1) | JPH10155811A (fr) |
| KR (1) | KR100521791B1 (fr) |
| CN (1) | CN1211053C (fr) |
| AR (1) | AR009616A1 (fr) |
| BR (1) | BR9705756A (fr) |
| CA (1) | CA2219724C (fr) |
| FR (1) | FR2755845B1 (fr) |
| TW (1) | TW374738B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8714978B2 (en) | 2010-10-06 | 2014-05-06 | Dentsply International Inc. | Endodontic system and method |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19800324C2 (de) * | 1998-01-07 | 2001-05-10 | Brasseler Gmbh & Co Kg Geb | Dentalinstrument |
| US7249414B2 (en) | 1999-09-10 | 2007-07-31 | Micro Mega, S.A. | Method for making a root canal instrument |
| FR2798277B1 (fr) | 1999-09-10 | 2002-04-19 | Micro Mega Sa | Instrument canalaire du type alesoir dentaire et procedes de realisation |
| US7147469B2 (en) * | 2002-08-28 | 2006-12-12 | Ormco Corporation | Endodontic instrument |
| US20050273123A1 (en) * | 2004-03-22 | 2005-12-08 | Smart Medical Solutions B.V. | Catheter and method for use of such a catheter for removing a stenosis from a vessel |
| ATE503433T1 (de) | 2005-04-08 | 2011-04-15 | Michael J Scianamblo | Sich biegende endodontische instrumente |
| US20060246394A1 (en) * | 2005-04-27 | 2006-11-02 | Giuseppe Cantatore | Endodontic files having improved lateral and torsional flexibility |
| FR2886837B1 (fr) | 2005-06-14 | 2008-04-11 | Micro Mega Int Mfg Sa | Ebauche pour la fabrication d'un instrument endodontique et procede pour la fabrication dudit instrument |
| US7435086B2 (en) * | 2005-08-02 | 2008-10-14 | Elio Vincenzo Giovanni Berutti | Endodontic tool having reduced torque demands |
| US7300281B2 (en) * | 2005-08-02 | 2007-11-27 | Giuseppe Cantatore | Endodontic file having bi-directional scraping edges |
| US7766657B2 (en) | 2005-08-09 | 2010-08-03 | Andris Jaunberzins | Endodontic file combining active and passive cutting edges |
| US7270541B1 (en) * | 2006-03-02 | 2007-09-18 | Johnson William B | Endodontic files having variable helical angle flutes |
| US8657537B2 (en) * | 2007-11-13 | 2014-02-25 | Maillefer Instruments Holding Sarl | Cutting instrument and methods for implementing same |
| US8047842B2 (en) * | 2008-08-18 | 2011-11-01 | Johnson William B | Reciprocal reverse rotation endodontic file |
| US8461546B2 (en) | 2009-04-03 | 2013-06-11 | Lawrence Livermore National Security, Llc | Compounds for neutron radiation detectors and systems thereof |
| CH704706B1 (fr) * | 2011-03-18 | 2015-09-30 | Fkg Dentaire S A | Instrument endodontique pour l'alésage de canaux radiculaires. |
| US9309456B2 (en) | 2011-04-15 | 2016-04-12 | Lawrence Livermore National Security, Llc | Plastic scintillator with effective pulse shape discrimination for neutron and gamma detection |
| US9121947B2 (en) | 2012-01-23 | 2015-09-01 | Lawrence Livermore National Security, Llc | Stress reduction for pillar filled structures |
| CN102626346B (zh) * | 2012-04-19 | 2015-09-23 | 肖杨 | 口腔研磨控向仪 |
| US9650564B2 (en) | 2012-05-14 | 2017-05-16 | Lawrence Livermore National Security, Llc | System and plastic scintillator for discrimination of thermal neutron, fast neutron, and gamma radiation |
| WO2014118587A1 (fr) | 2013-01-30 | 2014-08-07 | Maillefer Instruments Holding Sàrl | Instrument pour l'alésage des canaux radiculaires dentaires |
| US9274237B2 (en) | 2013-07-26 | 2016-03-01 | Lawrence Livermore National Security, Llc | Lithium-containing scintillators for thermal neutron, fast neutron, and gamma detection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537430A1 (fr) * | 1982-12-10 | 1984-06-15 | Micro Mega Sa | Alesoir dentaire a triple cannelure helicoidale et a pas progressif |
| US4934934A (en) * | 1988-11-04 | 1990-06-19 | Quality Dental Products, Inc. | Dental file/reamer instrument |
| CH677184A5 (en) * | 1988-08-23 | 1991-04-30 | Flueckiger & Huguenin S A | Dental instrument for root canal work - has tip formed from intersecting conical and curved surfaces to follow canal contours |
| US5464362A (en) * | 1991-11-05 | 1995-11-07 | Tulsa Dental Products, L.L.C. | Endodontic instrument |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538989A (en) * | 1979-10-01 | 1985-09-03 | Dentsply International, Inc. | Dental reamer |
| JPS5736912U (fr) * | 1980-08-12 | 1982-02-26 | ||
| FR2692473B1 (fr) * | 1992-04-06 | 1995-06-02 | Micro Mega Sa | Tête de contre-angle jetable et contre-angle ainsi équipé. |
-
1996
- 1996-11-20 FR FR9614347A patent/FR2755845B1/fr not_active Expired - Fee Related
-
1997
- 1997-11-03 EP EP97470026A patent/EP0850600A1/fr not_active Withdrawn
- 1997-11-18 US US08/972,599 patent/US5975899A/en not_active Expired - Lifetime
- 1997-11-19 CN CNB971231265A patent/CN1211053C/zh not_active Expired - Fee Related
- 1997-11-19 KR KR1019970061122A patent/KR100521791B1/ko not_active Expired - Fee Related
- 1997-11-19 AR ARP970105405A patent/AR009616A1/es active IP Right Grant
- 1997-11-19 CA CA002219724A patent/CA2219724C/fr not_active Expired - Fee Related
- 1997-11-20 BR BR9705756A patent/BR9705756A/pt not_active IP Right Cessation
- 1997-11-20 JP JP9336350A patent/JPH10155811A/ja active Pending
-
1998
- 1998-01-08 TW TW086117363A patent/TW374738B/zh active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537430A1 (fr) * | 1982-12-10 | 1984-06-15 | Micro Mega Sa | Alesoir dentaire a triple cannelure helicoidale et a pas progressif |
| CH677184A5 (en) * | 1988-08-23 | 1991-04-30 | Flueckiger & Huguenin S A | Dental instrument for root canal work - has tip formed from intersecting conical and curved surfaces to follow canal contours |
| US4934934A (en) * | 1988-11-04 | 1990-06-19 | Quality Dental Products, Inc. | Dental file/reamer instrument |
| US5464362A (en) * | 1991-11-05 | 1995-11-07 | Tulsa Dental Products, L.L.C. | Endodontic instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8714978B2 (en) | 2010-10-06 | 2014-05-06 | Dentsply International Inc. | Endodontic system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1211053C (zh) | 2005-07-20 |
| US5975899A (en) | 1999-11-02 |
| KR100521791B1 (ko) | 2006-01-27 |
| MX9708914A (es) | 1998-09-30 |
| AR009616A1 (es) | 2000-04-26 |
| CA2219724C (fr) | 2007-04-10 |
| KR19980042591A (ko) | 1998-08-17 |
| CA2219724A1 (fr) | 1998-05-20 |
| CN1182574A (zh) | 1998-05-27 |
| BR9705756A (pt) | 1999-06-29 |
| FR2755845B1 (fr) | 1999-06-04 |
| JPH10155811A (ja) | 1998-06-16 |
| TW374738B (en) | 1999-11-21 |
| FR2755845A1 (fr) | 1998-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR IT LI NL SE |
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| AX | Request for extension of the european patent |
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| 17P | Request for examination filed |
Effective date: 19980722 |
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| AKX | Designation fees paid |
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| RBV | Designated contracting states (corrected) |
Designated state(s): BE CH DE ES FR IT LI NL SE |
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| 17Q | First examination report despatched |
Effective date: 20030613 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| 18W | Application withdrawn |
Effective date: 20050121 |